Impressment is when a military forces someone into war. The British is forcing US seamen into war. The US seamen had no choice but to go into war with them.
James Madison the nations president and declared war. Madison was mad that the British were taking US seamen so declared war on them. The Federalists were mad because they didn't want to fight there alliances Great Britain they wanted to stay calm with them but the democratic republicans didn't care. That's how the war of 1812 happened.
The United States and British fought and fought. It was a long and hard fight that lasted quite a long time. They fought all a long Canada and the west and the midwest areas.
United States defended themselves and about took down the British. The British was basically defeated. A man named Francis Key Scott helped United States and made this song known as the Star Spangled Banner. After this war it lead to the treaty of ghent.
The treaty of ghent was a peace treaty after the war of 1812. The treaty was between United States and British. Both of the countries signed it in December 24, 1814 in the city Ghent, Netherlands.